Suggest Remedy For Lack Of Concentration After Taking Fluoxetine Tablets

My 22 year old daughter is taking Fluoxetine/Prozac, 20 mg per day for depression. She has been taking the medicine for about 2 weeks and is having a problem concentrating. She is a student and finds that she can not focus for more than 10 minutes. She called her doctor but the office is closed due to bad weather and their is no on-call service. What do you advise? She has an appointment at 9:00 tomorrow but is there anything she can do now to help her focus. She is prepping for mid-terms so the timing is an significant issue